运行前焊接检测

Above ground storage tanks are manufactured with welded plates and radiography continues to be used for the inspection of the butt welded joints. Many issues exist with this approach. Technicians are exposed to high doses of radiation. The manufacturer needs to shut down certain operations and wait at least 12 hours to get inspection results. Today, API 650 Appendix U provides detailed rules of ultrasonic inspections in place of radiography eliminating those issues and safety concerns.

Inspection Challenges

For this type of inspection, it is critical that the full volume of the weld is inspected. The position of the probes on each side of the weld must be carefully calculated and monitored during the inspection. Should the scanner drift, the full volume of the weld is not inspected as requested by codes and there is a high probability that the operator isn’t aware of that issue.

Recommended Solution & Advantages:

An integrated TOFD and Phased Array system is the optimal solution for this type of application delivering significant advantages including:Improved productivity